Heating and cooling system for self propelled vehicles



Oct. 25, 1938. 1 c. HAYWOOD 2,134,188? HEATING AND COOLING SYSTEM FOR' SELF PROPELLED VEHICLES Original Filed Oct. 19, 1936 8 Z2 l i l m I ATTORNEYS,

.tioning in a normal Patented Oct. 25, 1938 UNlTED STATES PATENT OFFICE HEATING Application October 19, 1936, Serial Renewed April 8, 1938 12 Claims.

This invention relates to a temperature chang-, ing system for supplying cooled or cold air, when desired, or hot or heated air, when desired, and for example, to the interior compartment of an automobile, the system being self contained.

The chief object of the invention is to provide a system which by selective connection, is capable of functioning, either as a. heating system or cooling system.

The chief features of the invention consists in providing in an absorption type refrigerating system a by-pass whereby the same is adapted to function as a heating system, instead of funcmanner as a cooling system.

Other features of the invention will appear more fully hereinafter.

The full nature of the invention will be understood from the accompanying drawing and the following description and claims.

In the drawing, the figure diagrammatically illustrates the invention applied to an automobile, parts thereof being conventionally illustrated as well.

In the drawing, l0 indicates a portion of an internal combustion engine, having a fan I I driven by a belt I2 in the usual manner. Said fan is positioned immediately rearward of that part of the engine cooling system portion known as the radiator it, which is shown positioned in spaced relation to and behind the radiator guard or grill M. The automobile also is shown provided with a hood structure l5, cowl l6 and a dash board II. The engine It discharges to and through an exhaust pipe l8.

Associated with the exhaust pipe and deriving heat therefrom, is the generator IQ of the absorption system. The automobile also includes a battery 20 grounded as at 2| to the frame and having one line 22 leading therefrom to a switch 22, from which also leads a line 23 to a motor 24 driving a fan 25 mounted in juxtaposition to" the dash and if desired, upon the same, and immediately behind a radiator 26 which, when used for cooling air, serves as the evaporator in the cooling system and which when used for heating air, serves as the heater of the-system.

The various other electrical connections between the battery generator and ignition system of the engine have been intentionally omitted for clearness. 4

If desired, the fan motor 2| may be replaced with a suction or vacuum operable motor, such fan operation for moving air and for changing the temperature in the enclosed compartment of a self propelled vehicle being well known in the SYSTEM FOR- SELF VEHICLES Carl Haywood, Indianapolis, Ind.

art as being the fullequivalent of the electrically operated fan structure shown herein.

generator The absorption type system includes in the IS the coils |9a, and a line 21 therefrom includes a T 28, the line being continued and discharging to an analyzer 29 which serves evaporator 26, such connection being trap out the moisture. The linev3|l therefrom nnects the analyzer to the rectifier 3|. The ctifier is connected by line 32 to the condenser the latter being connected by line 34 to the controlled by a valve, indicated generally by the numeral and to which reference will be had hereinafter.

thus the pump is The radiator or evaporator 26 is connected by line 36 to the absorber 31 and the absorber 31 discharges by a line 38 and line 39 to the pump The pump 40 in turn discharges by line Al the generator.

which engages the fan driving belt l2 and operable with and by the engine.

scribed, also includes the pass, the same including The absorption type system thus briefly deweak liquor line bythe line 44 which is normally in open communication with the line 21- and connects line 21 to, the absorber by line 45. Thus, the weak liquor which passes through lines ra is and 45 unites with the discharge from the diator 26 through line 36 at the absorber 37 and returned to the pump through lines 38 and 39. The rectifier includes a portion 41 which is nnected by line 48 to the weak liquor line #55 as at 49 which connection is between two temperature changing devices 50 and 5|,

nected to lines 38 and 39 as shown.

respectively, erein. Included within the portion 5| is a coil,

equivalent device, 52, which has its ends con--- The device is included as a part of the weak liquor bypass. The device 50 is also included as a part of ,passed through the coils e weak liquorv line. The cooling medium is' 53 of the device 5|, be-

ing supplied by line 54 and discharging therefrom by line 55. Line 55 is associated with the absorber 31, as indicated at 55, and the discharge associated with the rectifier 3|.

co sh The valve 35 is a three-way valve. In one The pump 4|! mounts a pulley position the entire system is completely closed. In another position the line 34 is prevented from discharging to the radiator 28 and simultaneously therewith line 6i discharges to the radiator 26. In another position, the'valve it prevents line 6i from communicating with the radiator 28 and permits the line ll to'communicate with the radiator 28 and said communication may be regulated. When thus positioned, the valve I! serves as an expansion valve'in the cooling systern.

To'those familiar with the absorption type system of refrigeration, and to which this description is addressed, the various operations of the respective units diagrammatically illustrated herein, needs no additional description, except to point out that the inclusion of the by-pass 6i around the analyzer, rectifier and condenser of the absorption system, permits the system to serve as a heat supplying device-that is, to supply heat to the air passed through the radiator 26 by the fan instead of functioning as a coolin system for cooling air passed through the radiator 26 by the fan 25.

Certain of the devices, such as 50 and SI, may be utilized or omitted without departing from the broad feature of the invention, although their inclusion is preferred.

The cooling .medium in .the cooling system, which includes the pipe 51, coil 58, pipe 59, cool ing coil or radiator so, pipe 54, coil 53, pipe 55, coil is preferably carbon tetrachloride. The inclusion of the by-pass arrangement 41, 48 and 49 is also optional in certain instances, although the inclusion of this portion of the system is preferred in the preferred form of the invention.

While the generator is is shown associated with the exhaust pipe i8, it may be associated with any other source of heat or the heated portion of the exhaust system of the engine.

While the invention has been illustrated and described as being associated with an automobile generally, the same is not entirely restricted thereto but such application or embodiment is to be considered as illustrative.

While the invention has. been described in great detail as to the novel portions and more or less generally, as to the absorption type system v and various modifications have been pointed out hereinbefore, all of the aforesaid is to be consideredillustrative and not restrictive in character, and the said modifications as well as others which will readily suggest'themselves to persons skilled in this art, all are considered to be within the broad scope of the invention, reference being had I to the appended claims.

The invention claimed is: -1. In a motor vehicle heating and cooling system, the combination with an engine providing a source-of heat and a source of power for a temperature changing system, of a temperature changing system of the absorption type including a heat changing radiator, means for moving air in juxtaposition thereto, the temperature of which is to be changed, a pump operable bythe engine, an absorption type system including a cooling system, a generator, a rectifier, an absorber, and a condenser, the generator beins associated with the source of heat, the generator,

rectifier and condenser being connected in series, the condenser discharging to the'radiator, the pump being connected to the absorber and the generator, and valve means in the absorption system, and a by-pass between the generator and radiator around the rectifier and condenser, said valve means selectively controlling the temperature changing medium in the temperature changing system to secure heating or cooling of the air as desired.

2. A system as defined by claim 1, characterized by the valve means comprising a three-way, expansion valve.

3. A system as defined by claim 1, characterized by the engine source of power including an engine driven belt, and said pump being juxtapositioned relative engageable means for pump operation with and by engine operation.

4. A- system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, and a connection from the weak liquor by-pass to the by-passed portion of the system between the rectifier and condenser.

5. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, the cooling system including a cooling portion or radiator for cooling the cooling medium therein and having other portions operatively associated with the rectifier and absorber.

6. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, the cooling system including a cooling portion or radiator for-cooling the cooling medium therein and having other portions operatively associated with the rectifier, absorber and weak liquor by-pass.

7. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, the cooling system, including a cooling portion or radiator for coolingthe cooling medium therein and having other portions operatively associated with the rectifier and absorber, and means included between the absorber and pump and in the communication therebetween and operatively associated with a portion of the weak liquor by-pass.

8. A system as defined'by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, the cooling system including a cooling portion or radiator for cooling the cooling medium therein and having other portions operatively associated with the rectifier, absorber and weak liquor by-pass, and means included between the absorber and pump and in the communication therebetween and operatively associated with a portion of the weak liquor by-pass.

9. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, and a connection from the weak liquor by-pass to the by-passed portion of the system between cooling system including a cooling portion or radiator for cooling the cooling medium therein and having other portions operatively associated with the rectifier and absorber.

10. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to thereto and including belt' the rectifier-and condenser, the

the absorber and around the rectifier, condenser and radiator, and a connection from the weak liquid by-pass to the by-pass =d portion of the system between the rectifier and condenser, the,

cooling system including a cooling portion or radiator for cooling the cooling medium therein 20 rectifier and absorber, and means included between the absorber and pump and in the communication therebetween and operatively asso ciated with a portion oi the weak liquor by-pass. 12. A system as defined by claim 1, characterized by the temperature changing system including a weak liquor by-pass from the generator to the absorber and around the rectifier, condenser and radiator, a connection from the weak liquor try-pass to the by-passed portion of the system between the rectifier and condenser, the cooling system including acooling portion or radiator for cooling thecooling medium therein and having other portions operatively associated with the rectifier, absorber and weak liquor by-pass, and means included between the absorber and pump and in the communication therebetween and operatively associated with a portion or the weak liquor by-pass.

CARL HAYWOOD. go 

